ASTROSAT CZTI

Data Quality Report

Orbit 06595

Creation date: 2024-06-27T15:09:10.432402
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C02_002T01_9000000888_06595cztM0_level2.evt modeM0/AS1C02_002T01_9000000888_06595cztM0_level2_quad_clean.evt
Size (bytes)1,055,030,400173,194,560
Size1006.2 MB 165.2 MB
Events in quadrant A7,006,9051,064,828
Events in quadrant B7,353,6351,070,264
Events in quadrant C6,774,0431,060,074
Events in quadrant D9,795,4731,008,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310914
B0320584
C0309714
D0393614

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150893922.597919%
B150894362.889522%
C150892351.557426%
D150899416.236331%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 15799 15093 0 0 0.00% 0.00%
B 15799 15093 36 36 0.23% 0.24%
C 15799 15093 0 0 0.00% 0.00%
D 15799 15093 549 549 3.47% 3.64%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 100618 273.01 1764 1718 362.3
A 14 111 74767 201.65 1764 1718 362.3
A 3 1 22167 56.45 1764 1718 362.3
B 0 219 192717 555.34 1775 1726 343.9
B 4 81 105751 302.47 1775 1726 343.9
B 3 220 102740 293.71 1775 1726 343.9
C 8 128 17822 40.04 1724 1728 401.9
C 1 16 16171 35.93 1724 1728 401.9
C 13 61 13378 28.98 1724 1728 401.9
D 2 63 1252645 2991.57 1699 1645 418.2
D 2 33 1069581 2553.8 1699 1645 418.2
D 2 152 330150 785.57 1699 1645 418.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter